/* ==========================================================================
   sped-accessibility.css - 特殊教育無障礙核心樣式 (WCAG 2.1 AA & UDL)
   四色位值錨定、A/B/C差異化徽章、語音朗讀動畫、虛擬大數字鍵盤與皮克斯溫暖提示卡
   ========================================================================== */

/* 1. 四色時間單位標記系統 (Unit Color Coding) */
.unit-tag {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 4px 12px;
  border-radius: 8px;
  font-weight: 800;
  font-size: 1.1rem;
  letter-spacing: 0.5px;
  user-select: none;
}

/* 日：溫暖橘 */
.unit-day, .col-day {
  color: #c2410c !important;
  background-color: #ffedd5 !important;
  border: 2px solid #fb923c !important;
}

/* 時：沉穩藍 */
.unit-hour, .col-hour {
  color: #1d4ed8 !important;
  background-color: #dbeafe !important;
  border: 2px solid #60a5fa !important;
}

/* 分：清新綠 */
.unit-min, .col-min {
  color: #15803d !important;
  background-color: #dcfce7 !important;
  border: 2px solid #4ade80 !important;
}

/* 秒：高雅紫 */
.unit-sec, .col-sec {
  color: #7e22ce !important;
  background-color: #f3e8ff !important;
  border: 2px solid #c084fc !important;
}

/* 2. A/B/C 三層級差異化徽章 */
.tier-selector {
  display: flex;
  gap: 12px;
  margin-bottom: 20px;
  flex-wrap: wrap;
}

.tier-btn {
  flex: 1;
  min-width: 140px;
  padding: 12px 18px;
  border-radius: 14px;
  border: 2.5px solid transparent;
  background: #f8fafc;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  font-size: 1.1rem;
  font-weight: 800;
  transition: all 0.25s ease;
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.04);
}

.tier-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
}

/* C 組：種子組（智能障礙與重度學障） */
.tier-btn.c-tier {
  border-color: #86efac;
  color: #166534;
}
.tier-btn.c-tier.active {
  background: #22c55e;
  color: #ffffff;
  box-shadow: 0 6px 16px rgba(34, 197, 94, 0.35);
}

/* B 組：小樹組（基礎進位與輕度學障） */
.tier-btn.b-tier {
  border-color: #93c5fd;
  color: #1e40af;
}
.tier-btn.b-tier.active {
  background: #3b82f6;
  color: #ffffff;
  box-shadow: 0 6px 16px rgba(59, 130, 246, 0.35);
}

/* A 組：大樹組（應用挑戰與融合程度） */
.tier-btn.a-tier {
  border-color: #fde047;
  color: #854d0e;
}
.tier-btn.a-tier.active {
  background: #eab308;
  color: #ffffff;
  box-shadow: 0 6px 16px rgba(234, 179, 8, 0.35);
}

/* 3. 特教無障礙輸入格（大字體、高對比、色塊引導） */
.sped-input {
  font-family: var(--font-num);
  font-size: 1.6rem;
  font-weight: 800;
  text-align: center;
  width: 90px;
  height: 56px;
  border-radius: 12px;
  border: 3px solid #94a3b8;
  background: #ffffff;
  color: #0f172a;
  outline: none;
  transition: all 0.2s;
}

.sped-input:focus {
  border-color: #6366f1;
  box-shadow: 0 0 0 4px rgba(99, 102, 241, 0.25);
  background: #fffbeb;
}

.sped-input.input-day:focus { border-color: #ea580c; box-shadow: 0 0 0 4px rgba(234, 88, 12, 0.2); }
.sped-input.input-hour:focus { border-color: #2563eb; box-shadow: 0 0 0 4px rgba(37, 99, 235, 0.2); }
.sped-input.input-min:focus { border-color: #16a34a; box-shadow: 0 0 0 4px rgba(22, 163, 74, 0.2); }
.sped-input.input-sec:focus { border-color: #9333ea; box-shadow: 0 0 0 4px rgba(147, 51, 234, 0.2); }

/* 4. 語音報讀控制與文字高亮 */
.tts-btn {
  background: #fef3c7;
  color: #92400e;
  border: 2px solid #f59e0b;
  width: 46px;
  height: 46px;
  border-radius: 50%;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 1.4rem;
  transition: all 0.2s;
  flex-shrink: 0;
}

.tts-btn:hover {
  transform: scale(1.1);
  background: #fde68a;
}

.tts-btn.speaking {
  animation: pulseSpeak 1.2s infinite alternate;
  background: #f59e0b;
  color: #ffffff;
}

@keyframes pulseSpeak {
  0% { transform: scale(1); box-shadow: 0 0 0 0 rgba(245, 158, 11, 0.6); }
  100% { transform: scale(1.15); box-shadow: 0 0 0 12px rgba(245, 158, 11, 0); }
}

.reading-highlight {
  background-color: #fef08a;
  border-radius: 4px;
  padding: 0 2px;
}

/* 5. 皮克斯溫暖提示卡 (Pixar-style Scaffolding Box) */
.hint-box {
  background: #fffbeb;
  border: 2.5px solid #fde68a;
  border-radius: 16px;
  padding: 16px 20px;
  margin-top: 16px;
  display: flex;
  align-items: flex-start;
  gap: 14px;
  box-shadow: 0 4px 12px rgba(245, 158, 11, 0.1);
}

.hint-avatar {
  font-size: 2.2rem;
  line-height: 1;
  flex-shrink: 0;
}

.hint-content {
  flex: 1;
}

.hint-title {
  font-weight: 800;
  color: #92400e;
  font-size: 1.15rem;
  margin-bottom: 4px;
}

.hint-text {
  color: #78350f;
  font-size: 1.05rem;
  line-height: 1.5;
}

/* 6. 虛擬大數字鍵盤 (On-screen Big Keypad) */
.virtual-keypad-container {
  display: flex;
  justify-content: center;
  margin-top: 16px;
}

.virtual-keypad {
  display: grid;
  grid-template-columns: repeat(3, 72px);
  gap: 10px;
  background: #f1f5f9;
  padding: 14px;
  border-radius: 18px;
  border: 2px solid #cbd5e1;
  box-shadow: var(--shadow-sm);
}

.key-btn {
  height: 60px;
  font-family: var(--font-num);
  font-size: 1.6rem;
  font-weight: 800;
  background: #ffffff;
  color: #1e293b;
  border: 2px solid #cbd5e1;
  border-radius: 12px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.15s;
  user-select: none;
}

.key-btn:hover {
  background: #e2e8f0;
  transform: translateY(-2px);
}

.key-btn:active {
  transform: translateY(1px);
  background: #cbd5e1;
}

.key-btn.action-btn {
  background: #fee2e2;
  color: #991b1b;
  border-color: #fca5a5;
  font-size: 1.2rem;
}

.key-btn.confirm-btn {
  background: #dcfce7;
  color: #166534;
  border-color: #86efac;
  font-size: 1.2rem;
}

/* 7. 進位提示金色提醒框 (Carry Hint Card) */
.carry-prompt-badge {
  background: #fef08a;
  color: #854d0e;
  border: 2px dashed #eab308;
  border-radius: 12px;
  padding: 6px 14px;
  font-weight: 800;
  font-size: 1rem;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  animation: bounceSoft 1s infinite alternate;
}

@keyframes bounceSoft {
  0% { transform: translateY(0); }
  100% { transform: translateY(-4px); }
}